fix(install-script): fix fips uninstaller (#146)

This commit fixes an issue in the install script where the fips package
can be installed and upgraded, but not removed, as the specified package
name is incorrect in the uninstall function.

Signed-off-by: Eric Chlebek <echlebek@sumologic.com>

install-script/install.sh

@@ -626,13 +626,13 @@ function uninstall_darwin() {
 function uninstall_linux() {
     case $(get_package_manager) in
         yum | dnf)
-            yum remove --quiet -y otelcol-sumo
+            yum remove --quiet -y "${package_name}"
             ;;
         apt-get)
             if [[ "${PURGE}" == "true" ]]; then
-                apt-get purge --quiet -y otelcol-sumo
+                apt-get purge --quiet -y "${package_name}"
             else
-                apt-get remove --quiet -y otelcol-sumo
+                apt-get remove --quiet -y "${package_name}"
             fi
             ;;
     esac